Rock Blast for the Nintendo DS is a puzzle genre game where players aim to clear stages by matching and blasting colored rocks. Utilizing the DS stylus, players strategically shoot rocks from a cannon to create groups of three or more similarly colored stones, causing them to explode and disappear. The game features various levels with increasing difficulty and additional obstacles, challenging players to think and act quickly. With its simple yet addictive gameplay, Rock Blast offers an engaging experience for puzzle enthusiasts of all ages.